July 31, 2001
From: Jun Imamoto
I went to Izu-Osezaki (Suruga Bay, Japan) for a diving on July 28, 10:05 a.m. We found this sea slug which is not on the species list. I think it is perhaps a species of Cuthona.
They were found at 2-3M depth and were all around 6-8mm long. (Water temperature is 25-26C degrees.) They were under a stone. I hope that those images help in your research.
email@example.comImamoto, J., 2001 (Jul 31) Cuthona purpureoanulata from Japan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4964